package chap6;

/**
 * @author oldliu
 * @since 1.0
 */
public class Arra1 {
    public static void main(String[] args) {
        int []a=new int[10];
        a[0]=99;
        a[1]=98;
        a[2]=97;
        a[3]=90;
        System.out.println(a);//看不到
        System.out.println(a[0]);
        System.out.println(a[1]);
        a[0]=a[0]-20;
        System.out.println("修改后："+a[0]);

        //double[] d=new double[2130000000];

    }

}
